Danny Federici of E Street Band dies at 58

Keyboardist Danny Federici, who for four decades played alongside rock star Bruce Springsteen as part of the E Street Band and helped define his rollicking sound, has died of melanoma. He was 58.

Federici's death at Memorial Sloan-Kettering Cancer Center in New York on Thursday was announced on Springsteen's official Web site and the rocker postponed a pair of weekend concerts in Florida.

"Danny and I worked together for 40 years - he was the most wonderfully fluid keyboard player and a pure natural musician. I loved him very much ... we grew up together," Springsteen said on the Web site.